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[Bug 1439849] Re: BUG: unable to handle kernel NULL pointer dereference at 0000000000000010


** Tags added: kernel-fixed-upstream kernel-fixed-upstream-4.0-rc6

** Tags removed: kernel-fixed-upstream kernel-fixed-upstream-4.0-rc6
** Tags added: kernel-bug-exists-upstream kernel-bug-exists-upstream-4.0-rc6

** Tags added: bios-outdated-1.39

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  BUG: unable to handle kernel NULL pointer dereference at

Status in linux package in Ubuntu:
  In Progress

Bug description:
  I hit this bug as I'm logging in to an encrypted home account after
  booting with systemd. It results in a hung system immediately after
  the password authentication stage as pam_ecryptfs call mount.ecryptfs
  to mount the user's encrypted home directory.

  I can't reproduce it in a VM. Booting with upstart works fine. I was
  previously booting with systemd without any problem so this may be due
  to a change in the 219-6ubuntu1 systemd update.

  ProblemType: KernelOops
  DistroRelease: Ubuntu 15.04
  Package: linux-image-3.19.0-11-generic 3.19.0-11.11
  ProcVersionSignature: Ubuntu 3.19.0-11.11-generic 3.19.3
  Uname: Linux 3.19.0-11-generic x86_64
  Annotation: Your system might become unstablenow and might need to be restarted.
  ApportVersion: 2.17-0ubuntu1
  Architecture: amd64
   /dev/snd/controlC0:  tyhicks    3786 F.... pulseaudio
  Date: Thu Apr  2 14:19:21 2015
  DuplicateSignature: BUG: unable to handle kernel NULL pointer dereference at location RIP: 0010:location  location propagate_one+0xc7/0x1e0
  Failure: oops
  InstallationDate: Installed on 2011-08-23 (1318 days ago)
  InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
  MachineType: LENOVO 4286CTO
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-11-generic root=UUID=bd144b12-0d78-4d1e-b69c-8d83ee663c8f ro quiet splash kaslr crashkernel=384M-:128M crashkernel=384M-:128M vt.handoff=7 init=/sbin/upstart
  PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
  RelatedPackageVersions: kerneloops-daemon 0.12+git20090217-3ubuntu8
  SourcePackage: linux
  Title: BUG: unable to handle kernel NULL pointer dereference at 0000000000000010
  UpgradeStatus: Upgraded to vivid on 2015-02-27 (34 days ago)
  dmi.bios.date: 04/11/2013
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 8DET68WW (1.38 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 4286CTO
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Available
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvr8DET68WW(1.38):bd04/11/2013:svnLENOVO:pn4286CTO:pvrThinkPadX220:rvnLENOVO:rn4286CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 4286CTO
  dmi.product.version: ThinkPad X220
  dmi.sys.vendor: LENOVO

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